Dockage tester



c. w. CARTR DOCKAGE TESTER Filed March 15`. 1926 3- Sheets-Sheet v1.

IIIIIIIIIJ Oct. 11, 1927.i 1,644,872v

C. W. CARTER DOCKAGE TESTER Filed March 15, 192s v sv sheets-.sheen C. W. CARTER DOCKAGE TESTER Oct. 11 1927.

Filed March 15, 192e 3 Sheets-Sheet 3 7a/61106 IM 60111761" Patented Oct. 11, 1927.

UN'TED STATES PATENT OFFICE.

CLARENCE W. CARTER, or ivIrNNn'A-ronrs, niiNNns'oT'A', Assienoa fro CARfrEa-MAY- Huw MANUFACTURING COMPANY, or MNNnAroLis, mNNEsorA, CORPORATION OF MINNESOTA.

DOCKAGE TESTER'.

Application led March' 15, 1926. Serial No; 94,864,V

This invention has foi its object to provide a highly efficient device .of relatively large capacity especially adapted for use as a dock-age or sample tester, and, generally stated, it consists of the novel devices, combinations of devices yand arrangement of parts hereinafter described and defined in thev claims.

The present docka'ge tester involves the Vuse of what l ldesignate as a primary continuously acting separator and a secondary or auxiliary separator. The secondary or auxiliary separator is preferably of the character disclosed and claimed in my prior pending application Serial No. 83,548, filed of date January 25, 1926. rfhe purposes and functions of these twoseparators in a combinedmachine will be made apparent by the following concrete illustration, assuming that the tester is to be used to separate broken from whole rice:

Dockage tests of .this character are usually made from a sample consisting of one thousand grams of commingled whole and broken rice. The broken rice will frequently be as much as forty or fty percent of the whole sample. In practice, I have found Vthat a vibratory pocketed separating plate such as that herein employed as the secondary or auxiliary separator, the same being substantially of the structure disclosed and claimed in my above identified prior application, if made large enough, will separate the broken rice from the good rice and retain substantially every particle of the former, but that it is neither desirable nor practicable to make such plate large enough to separate and contain anywhere nearly'las much as forty or fifty percent of one thousand grams. l have also found that a single rotary pooketed separating disc such as that known to the trade as the Carter-Mayhew separating disc, and which is disclosed-and broadly claimed in my priorPatent No. 1,364,247, of date January 4, 1921, entitled Grain separator, by its continuous `or repeated rotation, can be practically use dto separate byY far the greater part of the broken rice from the whole rice,` butk that it isdifficult to make such single disc separate out all that isa remaining Vsmallproportion of the broken rice from the whole rice. l have found, however, that an ideal machine of small'V size can bemadeto quicklyrand satisfactorily separate broken from` whole rice of a sample such as above considered. This matter will be made clear'by a description of the machine illustratedinI the accompanying dra-wings, wherein like characters indicate like part-s throughout the several views.

Referring to the'draw'ings: y

Fig. 1 is a plan view of the improvedl machine, some parts being sectioned;l

Fig. 2 is a side elevation of the machine, some parts being sectioned on the line 242 of Fig.y 1 and some parts being broken away; and

F ig. 3 is a transverse vertical section taken approximately on' the irregular lline 3 3 of Fig. 2.

vThe numeral 4 indicates a primary hopper adapted to receive the complete sample of whole and broken rice, for example. This hopper is shown assupportedin an elevated position by a framework 5 securedon a base 6. In' its bottom,\tlie hopper 4 is provided with anormallyi closedl slidinglgate 7 which, when opened, dumps the load. Working in the hopper 4 is a separating disc 8 shown as provided in both faces with pockets which, for the Work at present considered, will have .pockets large enough to receive only broken rice but not large enough toreceive whole rice and, hence, to reject the latter. disc'is secured to an axial shaft` 9 journaled in suitable bearings 10 secured` on the top of thesides of the hopper 4. The shaftf9,.at one end, is shown as provided with a grooved wheel or pulley 11 rover which runs abelt 12 drivenk from another grooved pulley 13 carried by a shaft 14 of the rotor of avery small'electric mot-Orl 15, the frame ofvwhich is preferably secured on the base 6. The drive illustrated reduces the speed from the motor to the separating disc, but in practice, anyl suitable mechanism' for reducing vsuch rotary motion to a'- greater extent mayl be employed; l

To catch the broken rice carried-upward by the` pockets ofv the rotating" disc, there is provided on-each side thereof anA inclined collecting spout 16 shown as supported from the top of the hopper by brackets 17. When the gate -7 S Opeed the' Contents? ofY the hopper will: fall onto f an'inclineditransfer spout 18 shown as ysecuredjtothe-upperend of a leg 19 which, at'its lower end,-is shown as pivotedtoa bracket 20 ongtliebase 6 and the forivard'swngng movement 'of which *is* This .The above noted vibratory separating A plate is `preferably supported ina slightly inclined position, and Jfor the purpose at present considered, is provided with pockets ot a size toreceive broken rice but not to receive and, hence, to `reject wholerice; and

Y this plate is mounted on a vibratory supporting bed. The supporting bed may take various forms, but, as shown, is made up of an inclined plate 22 with depending side flanges 23`securedl to the upper ends ci up-y right resilient spring 4metal supporting legs 24, which latter, at their lower ends, are anchored to the base 6.

The separating plate 25 is formed with closely positioned pockets 26 which, `for the form the sides of a receiving hopper 8O f V ln theoperation ofthe machine,the com# separating plate.

separation of broken 'from whole rice, are of such size that they will receive only the broken rice. This pocketed separating plate Arests on the supporting bed 22v and,-hence,

will Vbe in a slightly `inclined position. Secured'to and depending from the lower end of the separating plate 25 are hinge lugs 27 formed with open seats that pivotally. .and detachably engage a hinge rod` 28 secured to and extending .betweenA the side flanges 23 of thesupporting bed 22. The supporting bed 22 is shown as formed with upstanding side langes 29 that are increased in depth at their upper ends, so that they located at the .upper or receiving end of the p The front plate a of the hopper 30 is spaced from the separating 'plate so as to afford a feed passage at 31 for the 'even' distributienet the stock over the receiving .portion` of said separating plate.

For vibrating the'separating plate'25, and its supporting bed, any suitable means may be employedbut, as shown, this is accomplished by extending the' shaft lll Ythrough a bearing 32 on the bed Gand providing the same with Va short throw crank 33 that is yconnected by a pitman 3ft to a bracket 35 Y secured to one `of the side flanges 280i the Vsupporting bed 22;- The numeral 36 indicates a receptacleloosely placed on the bed 6 in position lto receive Inaterialtroinfy the vibratory separating plate. The character y indicates the ooinmingled whole and broken rice contained in the hopper 4.Y

Operation f mingled `stoclnfassurned tobben/'hole and 'brokencric'e`,risiplaceduin the hopper l, the

Y :gate7,fof-lcourse,being then closed. V,When

.the separating disc fisgthen rotated, it will pick upthebroken rrice,"`carry the-same upward and discharge the same into the collecting spout 16, and by the latter will be discharged into some suitable receptacle not shown but positioned to receive the same. Under the rotation of the disc, the stoclr will be agitated and the greater part of the broken rice will be separated from the whole rice, which latter, being rejected by the pockets off the disc, will remain in the hopper. By this operation, the great-er part olf the broken rice will be removed. W hen there remains in the whole rice vonly a small percentage of brel-:en rice, say live or ten per cent of the tot-al amount of such broken rice, the gate 7 will be open more or less and the whole rice with a small percent ot broken rice will bel dropped onto the transfer spout 18 and, by the latter,'delivered to the hopper 8O of the vibratory separating plate 25. A*

the pocketed plate 25 is vibrated, this comif mingled stock will be caused to slowly siftV down and run over the saine and the wholerice will pass over all ol' the pockets and into the receptacle 36, while the remaining small percentage ot broken rice will be caught and retained by the pockets 260i said separating plate. This small poclieted separating plate, as indicated, need be large enough only to catch and hold all of the reA maining small portions ot Vbroken rice. `When all of the whole rice has been passed over the separating plate, the separation ot all of the broken rice from the whole rice will have been accomplished. Another receptacle, such as 36, should then be placed in position and the transfer spout 18, having lbeen turned backward out of position, the

separating plate can be turned upward into a vertical position, as indicated by dotted llines in F ig. 2, `thereby Vdischarging the linally collected or remaining smallpercent of broken rice into the overlying receptacle. The smaller portion of the broken rice thus discharged from the' vibratory separating plate being then added to the broken rice taken out by the rotary disc and caught in the receptacleprovided to receive the same, will assemble together all of the brolenrice taken from the sample, and this, compared 'with the amount of whole rice delivered over the top of the vibratory separating Y plate, will give accurately the `percei'itage ot' broken rice in respect lto the wholerice.

0f course, this so-called dockage or sample tester may be used for various dierent purposes. TWhen it is toy be used, for example, to separate wheat from oats, yor small seeds Y trom'wheat, the pockets in the separating of the proper size to accomplish the particular desired result; Also, from what has been said, it will be understood that the device is capable of modication within the .spirit ofthe invention' as herein disclosed andclaimed. 1

- disc and inthe vibratory plate will be made That I claim is:

l. The combination with a primary separator having pockets adapted i0 receive certain objects and to reject other objects and to repeat over and over its cycles orI operation, or a secondary non-repeating separat-or'hav-- ing pockets adapted to receive certain objects and reject other objects, the said secondary separator being arranged to act upon the stock from which a part thereof has been removed from said primary separater and to complete the separation thereof.

2. The combination with a separat-or having pockets adapted to receive certain objects and to reject other objects and to repeat over and over again its cycles or operation, orn a secondary non-repeating Vibratory separating plate having pockets adapted to receive certain objects and to reject other objects, the said secondary separator being arranged to act upon the stock from Which a part thereof has been removed by said primary separator and to complete the separation of the two different kinds or classes of objects, said separating plate being movable into a position for discharge therefrom of the objects lodged in the pockets thereoi 3. rlhe combination with a primary separator including a hopper and a rotary separating disc working therein, said disc having pockets adapted to receive certain objects and to reject other objects, said hopper having a normally closed discharge gate, of a seronda-ry non-repeating separator including a separating plate and having pockets corresponding to those in said disc, means for rotating' said disc and for vibrating' said separating plate, and a transfer spout arranged to receive stock from said hopper when the gate thereof is open and to deliver the same onto said vib-ratory poclieted separating plate, the said separating plate being movable into a position to discharge from the pockets thereof the objects lodged therein.

Ll. The structure defined in claim 3 in which CLARENCE W. CARTER.

he f 

